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Low metabolism in a tropical bat from lowland Panama measured using heart rate telemetry : an unexpected life in the slow lane

Low metabolism in a tropical bat from lowland Panama measured using heart rate telemetry : an unexpected life in the slow lane

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DECHMANN, Dina, Severin EHRET, Aline GAUB, Bart KRANSTAUBER, Martin WIKELSKI, 2011. Low metabolism in a tropical bat from lowland Panama measured using heart rate telemetry : an unexpected life in the slow lane. In: Journal of Experimental Biology. 214(21), pp. 3605-3612. ISSN 0022-0949. eISSN 1477-9145

@article{Dechmann2011-11-01metab-17700, title={Low metabolism in a tropical bat from lowland Panama measured using heart rate telemetry : an unexpected life in the slow lane}, year={2011}, doi={10.1242/jeb.056010}, number={21}, volume={214}, issn={0022-0949}, journal={Journal of Experimental Biology}, pages={3605--3612}, author={Dechmann, Dina and Ehret, Severin and Gaub, Aline and Kranstauber, Bart and Wikelski, Martin} }

Gaub, Aline Publ. in: Journal of Experimental Biology ; 214 (2011), 21. - S. 3605-3612 Wikelski, Martin Ehret, Severin Dechmann, Dina Kranstauber, Bart 2011-11-01 eng Gaub, Aline Low metabolism in a tropical bat from lowland Panama measured using heart rate telemetry : an unexpected life in the slow lane Ehret, Severin Animals must optimize their daily energy budgets, particularly if energy expenditures are as high as they are in flying animals. However, energy budgets of free-ranging tropical animals are poorly known. Newly miniaturized heart rate transmitters allowed to address this in the small, energetically limited, Neotropical bat Molossus molossus. High-resolution 48-hour energy budgets showed that this species significantly lowers its metabolism on a daily basis, even though ambient temperatures remain high. Mean roosting heart rate was 144 beats/min<sup>-1</sup>, much lower than expected for a 10g bat. Low roosting heart rates combined with short nightly foraging times (37 min night<sup>–1</sup>) resulted in an estimated energy consumption of 4.08 kJ/day<sup>-1</sup>, less than 1/4 of the predicted field metabolic rate. Our results indicate that future research may reveal this as a more common pattern than currently assumed in tropical animals, which may have implications in the context of the effect of even small temperature changes on tropical species. Dechmann, Dina 2012-02-02T07:52:08Z deposit-license Kranstauber, Bart Wikelski, Martin 2012-02-02T07:52:08Z

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